中文摘要：

随着恐怖爆炸袭击威胁增加,地铁内部发生爆炸概率增大。地铁车站柱作为主要承载构件,当其遭受近距离爆炸荷载作用后,需要对其进行爆炸荷载作用下的损伤评估,评价其损伤等级进而进行整体结构安全性鉴定。利用有限元分析方法,建立＂炸药-空气-混凝土柱＂耦合分析模型,通过已有试验验证了模型适用性。提出了基于承载能力的地铁车站柱的损伤评估方法,将地铁车站柱损伤破坏分为不同损伤等级,对典型地铁车站柱在不同炸药作用下的损伤进行了评估。利用耦合计算模型和评估方法,可以实现对钢筋混凝土地铁车站柱在近距离内爆炸荷载作用下的损伤评价和抗爆设计。

英文摘要：

With increase in terrorists＇ blast threats,the occuring probability of explosion in a subway rises. As the main force-bearing member of a subway station,it is necessary to evaluate the damage of its column under a blast loading within a closer distance. Here,using the finite element analysis method,a coupled analysis model for explosive-airconcrete column was established. The applicability of the model was verified with existing tests. A damageevaluation method based on the load-bearing capacity of a subway station＇s column was proposed. The damage of the subway station column was divided into different damage levels. The damage of the column of a typical subway station under the actions of different explosives was evaluated. Using the proposed coupled calculation model and the evaluation method,the damage of a reinforced concrete column subjected to blast loading within a closer distance was evaluated and it was designed to meet the requirements of anti-blast.